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Atmospheric Turbulence Simulation Experimental System
The atmospheric turbulence simulation experimental system is built upon a spatial light modulator (SLM) to create a platform for simulating atmospheric turbulence conditions. By leveraging Kolmogorov’s statistical theory of turbulence and the power spectral density method, it generates dynamically adjustable turbulent phase screens. The system supports adjustment of subharmonic orders, enabling the creation of random phase screens that accurately reflect the statistical characteristics of turbulence. The software integrates a multidimensional parameter-control module that encompasses key variables such as phase-screen resolution and size, atmospheric coherence length (r0), inner and outer turbulence scales (l0 and L0), beam wavelength, beam waist radius, and propagation distance, thereby facilitating fine-grained simulation of turbulence intensity and propagation scenarios. Real-time loading of phase screens onto the SLM enables wavefront modulation, while the system also provides synchronous support for visual analysis of phase screens, import and export of image files, and data storage, thus offering a high-precision experimental environment for research on laser propagation under atmospheric turbulence interference and for validation of adaptive-optics algorithms.
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Diffraction-Based Optical Teaching Platform
The diffraction-based optical teaching platform is an upgraded version of the transmission-type digital optical teaching system, designed to meet the practical needs of optics laboratory instruction in higher education. The entire platform features a rail-guided design that facilitates precise adjustment of optical paths, enabling direct comparisons between digital and traditional optical experiments and thereby satisfying the hands-on teaching requirements of optics, optoelectronics, and quantum information programs at universities.
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Transmissive Optical Teaching Platform
The transmissive optical teaching platform is a multifunctional educational system designed for optoelectronics laboratories, focusing on 16 core optical experiments including double-slit interference, diffraction, Talbot imaging, and spatial filtering, while also demonstrating cutting-edge technologies such as computational holographic reconstruction, beam manipulation, and dispersion. Guided by the vision of “revolutionizing traditional laboratory instruction and deepening expertise in laser science,” this platform employs modular experimental design to integrate theoretical validation with exploratory investigation of phenomena, thereby supporting hands-on teaching in optics, optoelectronics, and quantum information programs at universities and helping to cultivate high-caliber professionals in the optoelectronics field who possess innovative thinking.
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Reflective Optical Teaching Platform
The Reflective Optics Teaching Platform is a comprehensive educational system specifically designed for university-level photonics and quantum laboratories. It supports 18 classic optical experiments, including Michelson interferometry and diffraction, enabling students to perform both qualitative and quantitative measurements with real-time adjustment of software parameters. This platform not only enhances students’ hands-on skills but also fosters their creativity.
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Integrated Optical Teaching Demonstration Platform
The Comprehensive Optical Teaching Demonstration Platform is a multifunctional educational system specifically designed for optics education, integrating classroom demonstrations, laboratory instruction, and public science outreach. Its core functionalities include immersive, three-dimensional demonstrations of dozens of classic optical phenomena, such as interference, diffraction, the Talbot effect, and Fresnel diffraction, while also incorporating cutting-edge technological applications like computational holographic reconstruction, the Abbe–Porter experiment, and the electro-optic effect, thereby establishing a comprehensive teaching continuum that spans from fundamental optics to advanced optical research.
Primarily serving specialized courses in physics, optoelectronics, and other science-and-engineering disciplines at universities, the platform is also well-suited for secondary-school optics education and interactive exhibits in science and technology museums. It is committed to providing tailored solutions for different educational levels, helping to cultivate optics professionals who possess both strong theoretical grounding and practical skills.
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Quantum Cryptography Research Platform
QCRP (Quantum Cryptography Research Platform) is a quantum cryptography research platform dedicated to delivering high-speed signal driving and data processing capabilities.
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The infrared single-photon detection module, as an important technology for detecting weak signals, finds extensive applications across numerous fields in physics, astronomy, chemistry, biology, medicine, and other disciplines.
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1.25 GHz Infrared Single-Photon Detector
The WT-SPD320 infrared single-photon detector operates at a frequency as high as 1.25 GHz and uses an InGaAs/InP single-photon avalanche diode (SPAD) as its photosensitive element. It features an integrated multi-stage cooler and employs a sinusoidal gating mode. This detector boasts high integration, high detection efficiency, low dark count rate, and low afterpulse rate. It supports customizable frequency settings and single/dual-channel configurations. Moreover, the detector offers a wide range of user-friendly operational functions, including support for both internal and external clock triggering, synchronized clock output, and adjustable detection efficiency and dead time—all via an intuitive user interface and set of convenient interfaces.
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Infrared single-photon detector
Single-photon detectors are instruments for detecting weak signals at the single-photon level, playing an indispensable role in numerous fields such as quantum optics, biophotonics, and laser ranging. In recent years, single-photon detectors have been widely used in the field of quantum cryptography and have become the core device for photoelectric conversion of quantum signals.
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Infrared free-running single-photon detector
The WT-SPDM400 infrared free-running single-photon detector module employs a negative-feedback InGaAs/InP single-photon avalanche diode (NFAD) as its photosensitive element. The element operates in Geiger mode and features rapid avalanche quenching, effectively suppressing the afterpulse effect. An internal temperature-control circuit ensures that the APD operates at a low temperature, thereby reducing the dark count rate. Additionally, the module allows for adjustable dead times—both short and long—which further help to suppress the afterpulse effect.
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The high-speed picosecond laser is an instrument widely used in scientific research fields such as laser ranging, optical measurement, and fluorescence lifetime analysis. In recent years, with the development of quantum cryptography, the high-speed picosecond laser has emerged as a core device for generating quantum signals, serving as a single-photon source.
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The high-speed clock generator is an instrument widely used in scientific research fields such as fast electronics, precision instrument excitation, semiconductors, and device testing.
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The delay signal counter is an instrument widely used in scientific research fields such as high-speed signal analysis and control, precise delay adjustment, and trigger-based counting. In recent years, with the development of quantum cryptography, the delay signal counter has become an essential tool for experimental studies on quantum signals.
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Multi-channel pulse signal source
The multi-channel pulse signal source is a high-speed, multi-channel pulse signal generation module. This signal source module boasts advantages such as multiple channels, high speed, and low jitter, and supports triggering by both internal and external reference sources. It also features independently adjustable single-channel delays, making it widely applicable in fields such as laser ranging, LiDAR, and quantum key distribution systems.
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A time-to-digital converter is an instrument that can identify the timing of events and convert analog signals into digital signals. It is widely used in scientific research fields such as statistical analysis of post-pulse distributions in lasers, measurement of particle collision times, quantum optics, quantum key distribution, optical detection, and lidar ranging.
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Uncertainty Relation Experimental Setup
The Uncertainty Principle Experimental Setup is a visualization platform specifically designed for teaching quantum mechanics. It aims to provide an intuitive verification of Heisenberg’s Uncertainty Principle through optical interference and diffraction phenomena, while also exploring the intrinsic relationships among conjugate variables such as position-momentum and time-energy. By integrating core concepts of quantum mechanics with classical optical experiments, this setup employs an “seeing-is-believing” interactive approach to help students break free from conventional classical physics mental frameworks and lay a practical foundation for understanding theories like quantum measurement and wave-particle duality.
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Michelson interferometer experimental setup
The Michelson interferometer is an experimental instrument specifically designed for undergraduate programs in optoelectronics and quantum information. Based on the principle of Michelson interference, it is a precision optical instrument that employs the amplitude-splitting method. It is primarily used to measure physical quantities such as optical path difference, length, and refractive index, and finds applications in modern science—including gravitational-wave detection. Thanks to its ingenious design and versatile functionality, the Michelson interferometer remains a cornerstone tool in optical experiments and precision measurements. Moreover, various modern interferometers derived from its underlying principles continue to drive advancements in both scientific research and industrial technology.
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Polarization and 3D Imaging Experimental Setup
The Polarization and 3D Imaging Experiment Kit is an innovative experimental set specifically designed for optics education. Through hands-on, intuitive experiments, it helps students explore the principles of polarized light and its real-world applications. The kit includes components such as 3D glasses, high-precision polarization filters, and a genuine movie screen, enabling the construction of three different 3D imaging systems that deliver cinema-quality stereoscopic visual effects and vividly reveal the mysteries of polarized light behind 3D movie technology.
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Quantum eraser experimental setup
The quantum eraser experimental setup is a quantum-optical system designed based on the Mach-Zehnder interferometer. Its core components include a laser, a beam splitter, polarization-modulation elements, and an observation screen. By controllably marking and then erasing path information, this setup provides a直观 demonstration of quantum superposition, the principle of complementarity, and the delayed-choice effect. It serves as a key experimental platform for studying quantum measurement and information evolution.
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A solid-state laser is a highly efficient optical system built upon a solid-state gain medium—such as neodymium-doped yttrium aluminum garnet crystal (Nd:YAG) or titanium-doped sapphire crystal. Its core function is to generate a high-brightness, highly coherent laser output via stimulated emission.
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